Which hosting and infrastructure
block AI crawlers?
Clouds, CDNs and registrars. 98 domains measured; 7 block at least one of the 30 tracked AI crawlers.
7of 98 hosting and infrastructure block at least one AI crawler · median access 100%
The AI crawlers these sites block most
Bytespider is blocked most often here, by 4 of 98 sites. What blocking each one means is in the AI crawler directory.
| User-agent | Operator | Purpose | Sites blocking |
|---|---|---|---|
Bytespider | ByteDance | model training | 4 of 98 |
Meta-ExternalAgent | Meta | model training | 3 of 98 |
PetalBot | Huawei | search indexing | 3 of 98 |
Amazonbot | Amazon | model training | 2 of 98 |
Applebot-Extended | Apple | Apple Intelligence control | 2 of 98 |
CCBot | Common Crawl | training dataset | 2 of 98 |
ClaudeBot | Anthropic | model training | 2 of 98 |
AI2Bot | Allen Institute for AI | model training | 1 of 98 |
Every domain in this category
Sorted by the share of tracked AI crawlers permitted, lowest first. Each report shows all 30 verdicts and the robots.txt rule behind them.
Method and caveats are described on the full study page: one robots.txt fetch per domain, resolved against 30 published AI user-agents, reported as the voluntary policy it is.